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Reference: Liedvogel, M, Maeda, K, Henbest, K et al., (2007). Chemical magnetoreception: bird cryptochrome 1a is excited by blue light and forms long-lived radical-pairs. PloS one, 2 (10), e1106.Citable link to this page:

 

Chemical magnetoreception: bird cryptochrome 1a is excited by blue light and forms long-lived radical-pairs.

Abstract: Cryptochromes (Cry) have been suggested to form the basis of light-dependent magnetic compass orientation in birds. However, to function as magnetic compass sensors, the cryptochromes of migratory birds must possess a number of key biophysical characteristics. Most importantly, absorption of blue light must produce radical pairs with lifetimes longer than about a microsecond. Cryptochrome 1a (gwCry1a) and the photolyase-homology-region of Cry1 (gwCry1-PHR) from the migratory garden warbler were recombinantly expressed and purified from a baculovirus/Sf9 cell expression system. Transient absorption measurements show that these flavoproteins are indeed excited by light in the blue spectral range leading to the formation of radicals with millisecond lifetimes. These biophysical characteristics suggest that gwCry1a is ideally suited as a primary light-mediated, radical-pair-based magnetic compass receptor.

Publication status:Published Funder: VolkswagenStiftung   Funder: Deutsche Forschungsgemeinschaft   Funder: University of Oldenburg   Funder: Human Frontier Science Programme   Funder: EMF Biological Research Trust   Funder: Royal Society   Funder: Engineering and Physical Sciences Research Council   Notes:Copyright 2007 Liedvogel et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Bibliographic Details

Publisher: Public Library of Science

Publisher Website: http://www.plos.org

Journal: PloS onesee more from them

Publication Website: http://www.plosone.org

Issue Date: 2007

pages:Article: e1106

pages:e1106Identifiers

Urn: uuid:ae277875-adf2-41f4-b9da-84f5e0546edb

Source identifier: 34024

Eissn: 1932-6203

Doi: https://doi.org/10.1371/journal.pone.0001106

Issn: 1932-6203 Item Description

Type: Journal article;

Language: eng Keywords: Animals Cell Line Free Radicals Flavoproteins Recombinant Proteins Cloning, Molecular Magnetic Resonance Spectroscopy Ultraviolet Rays Protein Structure, Tertiary Insects Cryptochromes Magnetics Birds Light Models, Biological Animal Migration Tiny URL: pubs:34024

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Autor: Liedvogel, M - institutionUniversity of Oxford - - - Maeda, K - institutionUniversity of Oxford - - - Henbest, K - institutionUni

Fuente: https://ora.ox.ac.uk/objects/uuid:ae277875-adf2-41f4-b9da-84f5e0546edb



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